If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Okanagan Falls: The hottest months are usually July and August with an average temp of 63°F, while the coldest months are December and February with an average of 27°F. The snowiest months in Okanagan Falls are January, February, March, and December, with each month seeing an average of 7 inches of snowfall.